Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 986 · 40 questions

The fast method (Keep a running total): Start with the first number. Add the tens of the next number, then its ones. Keep going until the list ends — only one total in your head at a time.

1. 1.85 + 74 + 51 + 83 =
2. 2.82 + 78 + 31 + 30 =
3. 3.66 + 30 + 43 + 83 =
4. 4.29 + 19 + 16 + 86 =
5. 5.42 + 59 + 39 + 18 =
6. 6.86 + 11 + 25 + 26 =
7. 7.17 + 36 + 17 + 32 =
8. 8.35 + 12 + 15 + 21 =
9. 9.45 + 34 + 49 + 86 =
10. 10.33 + 40 + 57 + 71 =
11. 11.70 + 39 + 25 + 55 =
12. 12.89 + 62 + 12 + 18 =
13. 13.67 + 25 + 41 + 87 =
14. 14.67 + 48 + 15 + 77 =
15. 15.53 + 11 + 41 + 58 =
16. 16.79 + 19 + 75 + 85 =
17. 17.53 + 17 + 35 + 47 =
18. 18.87 + 63 + 42 + 65 =
19. 19.54 + 42 + 25 + 24 =
20. 20.72 + 39 + 20 + 74 =
21. 21.14 + 18 + 32 + 82 =
22. 22.47 + 86 + 30 + 85 =
23. 23.65 + 28 + 45 + 28 =
24. 24.59 + 54 + 33 + 51 =
25. 25.41 + 66 + 49 + 26 =
26. 26.32 + 62 + 28 + 12 =
27. 27.49 + 41 + 64 + 44 =
28. 28.78 + 13 + 89 + 83 =
29. 29.31 + 54 + 26 + 26 =
30. 30.54 + 24 + 25 + 48 =
31. 31.73 + 82 + 36 + 45 =
32. 32.30 + 19 + 18 + 34 =
33. 33.24 + 63 + 66 + 37 =
34. 34.55 + 53 + 66 + 30 =
35. 35.76 + 26 + 78 + 61 =
36. 36.15 + 37 + 13 + 15 =
37. 37.21 + 35 + 80 + 66 =
38. 38.21 + 53 + 22 + 88 =
39. 39.53 + 23 + 79 + 75 =
40. 40.64 + 52 + 71 + 57 =

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